不同栽培密度对有色稻抽穗期叶片性状的影响

以黑糯（Y4）和红粳（Y5）两个有色稻为材料，设5种不同的栽培密度，研究了不同栽培密度对有色稻的叶片性状的影响。结果表明：抽穗期，随栽培密度的增加，有色稻叶片干物质积累增加，叶面积指数呈先增大后减少的单峰变化，上3叶叶片夹角和叶绿素含量减小。Y4和Y5的适宜密度分别为12万／666．7m^2和16万／666．7m^2，且Y5耐密性较Y4强。

Effect of Different Density on Leaf Character in Colored Rice at Heading Stage

Leaf Character was studied under five different densities with two colored rice of black glutinous （Y4） and red japonica （YS）.The results indicated that with increasing planting density, the dry weight of leaves of colored rice was increased, leaf area index was increased and then deceased with a mono peak variation, the angle and chlorophyll content on the top three leaves were increased. The suitable density of Y4 and Y5 is respectively 120, 000/666.7 m^2 and 160,000/666.7m^2, moreover, the durability to density of Y5 is stronger than Y4.